/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 08:45:55,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 08:45:55,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 08:45:55,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 08:45:55,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 08:45:55,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 08:45:55,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 08:45:55,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 08:45:55,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 08:45:55,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 08:45:55,325 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 08:45:55,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 08:45:55,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 08:45:55,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 08:45:55,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 08:45:55,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 08:45:55,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 08:45:55,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 08:45:55,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 08:45:55,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 08:45:55,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 08:45:55,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 08:45:55,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 08:45:55,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 08:45:55,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 08:45:55,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 08:45:55,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 08:45:55,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 08:45:55,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 08:45:55,370 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 08:45:55,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 08:45:55,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 08:45:55,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 08:45:55,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 08:45:55,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 08:45:55,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 08:45:55,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 08:45:55,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 08:45:55,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 08:45:55,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 08:45:55,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 08:45:55,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 08:45:55,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 08:45:55,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 08:45:55,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 08:45:55,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 08:45:55,421 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 08:45:55,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 08:45:55,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 08:45:55,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 08:45:55,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 08:45:55,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 08:45:55,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 08:45:55,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 08:45:55,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 08:45:55,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 08:45:55,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 08:45:55,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 08:45:55,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 08:45:55,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 08:45:55,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 08:45:55,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 08:45:55,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 08:45:55,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:45:55,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 08:45:55,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 08:45:55,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 08:45:55,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 08:45:55,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 08:45:55,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 08:45:55,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 08:45:55,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 08:45:55,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 08:45:55,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 08:45:55,762 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 08:45:55,764 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 08:45:55,765 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 08:45:55,765 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 08:45:55,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a72d3471/2d35270975dd46fcb0121823e7c3ddee/FLAGd8688a2c9 [2020-10-14 08:45:56,327 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 08:45:56,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 08:45:56,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a72d3471/2d35270975dd46fcb0121823e7c3ddee/FLAGd8688a2c9 [2020-10-14 08:45:56,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6a72d3471/2d35270975dd46fcb0121823e7c3ddee [2020-10-14 08:45:56,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 08:45:56,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 08:45:56,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 08:45:56,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 08:45:56,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 08:45:56,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:45:56" (1/1) ... [2020-10-14 08:45:56,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53a3b6da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:56, skipping insertion in model container [2020-10-14 08:45:56,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:45:56" (1/1) ... [2020-10-14 08:45:56,720 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 08:45:56,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 08:45:57,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:45:57,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 08:45:57,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 08:45:57,292 INFO L208 MainTranslator]: Completed translation [2020-10-14 08:45:57,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57 WrapperNode [2020-10-14 08:45:57,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 08:45:57,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 08:45:57,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 08:45:57,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 08:45:57,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (1/1) ... [2020-10-14 08:45:57,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (1/1) ... [2020-10-14 08:45:57,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (1/1) ... [2020-10-14 08:45:57,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (1/1) ... [2020-10-14 08:45:57,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (1/1) ... [2020-10-14 08:45:57,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (1/1) ... [2020-10-14 08:45:57,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (1/1) ... [2020-10-14 08:45:57,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 08:45:57,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 08:45:57,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 08:45:57,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 08:45:57,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 08:45:57,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 08:45:57,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 08:45:57,458 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 08:45:57,458 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 08:45:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 08:45:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 08:45:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-14 08:45:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-14 08:45:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 08:45:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 08:45:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-14 08:45:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-14 08:45:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-14 08:45:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-14 08:45:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-14 08:45:57,461 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-14 08:45:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-14 08:45:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 08:45:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 08:45:57,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 08:45:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 08:45:57,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 08:45:58,187 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 08:45:58,189 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 08:45:58,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:45:58 BoogieIcfgContainer [2020-10-14 08:45:58,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 08:45:58,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 08:45:58,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 08:45:58,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 08:45:58,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:45:56" (1/3) ... [2020-10-14 08:45:58,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389b0c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:45:58, skipping insertion in model container [2020-10-14 08:45:58,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:45:57" (2/3) ... [2020-10-14 08:45:58,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389b0c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:45:58, skipping insertion in model container [2020-10-14 08:45:58,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:45:58" (3/3) ... [2020-10-14 08:45:58,206 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-14 08:45:58,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 08:45:58,226 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 08:45:58,240 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 08:45:58,266 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 08:45:58,266 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 08:45:58,266 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 08:45:58,266 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 08:45:58,267 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 08:45:58,267 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 08:45:58,267 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 08:45:58,267 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 08:45:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2020-10-14 08:45:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-14 08:45:58,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:45:58,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:45:58,300 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:45:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:45:58,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1959120292, now seen corresponding path program 1 times [2020-10-14 08:45:58,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:45:58,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [389947768] [2020-10-14 08:45:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:45:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:45:58,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:58,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:45:59,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:00,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:03,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:03,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-14 08:46:03,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:46:03,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 08:46:03,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:03,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:03,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 08:46:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 08:46:03,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 08:46:03,962 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:03,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:04,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:04,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 08:46:04,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:04,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:04,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:04,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [389947768] [2020-10-14 08:46:04,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:04,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:46:04,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163796636] [2020-10-14 08:46:04,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:46:04,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:04,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:46:04,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:46:04,070 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 4 states. [2020-10-14 08:46:04,314 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:46:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:05,127 INFO L93 Difference]: Finished difference Result 222 states and 357 transitions. [2020-10-14 08:46:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:05,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-14 08:46:05,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:05,151 INFO L225 Difference]: With dead ends: 222 [2020-10-14 08:46:05,151 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 08:46:05,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 08:46:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-10-14 08:46:05,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-14 08:46:05,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 213 transitions. [2020-10-14 08:46:05,245 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 213 transitions. Word has length 63 [2020-10-14 08:46:05,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:05,246 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 213 transitions. [2020-10-14 08:46:05,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:46:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 213 transitions. [2020-10-14 08:46:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-14 08:46:05,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:05,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:05,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 08:46:05,253 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:05,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:05,254 INFO L82 PathProgramCache]: Analyzing trace with hash 5686805, now seen corresponding path program 1 times [2020-10-14 08:46:05,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:05,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756005963] [2020-10-14 08:46:05,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:05,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:05,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:05,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:05,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:07,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:07,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 08:46:07,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:46:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2655 [2020-10-14 08:46:07,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:07,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:07,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-14 08:46:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:46:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:08,162 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:08,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:08,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:08,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 08:46:08,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:08,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:08,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:08,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756005963] [2020-10-14 08:46:08,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:08,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:46:08,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103387852] [2020-10-14 08:46:08,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:46:08,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:08,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:46:08,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:46:08,209 INFO L87 Difference]: Start difference. First operand 148 states and 213 transitions. Second operand 4 states. [2020-10-14 08:46:08,420 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:46:08,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:08,826 INFO L93 Difference]: Finished difference Result 352 states and 537 transitions. [2020-10-14 08:46:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:08,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-10-14 08:46:08,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:08,830 INFO L225 Difference]: With dead ends: 352 [2020-10-14 08:46:08,830 INFO L226 Difference]: Without dead ends: 242 [2020-10-14 08:46:08,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:08,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-14 08:46:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2020-10-14 08:46:08,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-14 08:46:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 359 transitions. [2020-10-14 08:46:08,857 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 359 transitions. Word has length 64 [2020-10-14 08:46:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:08,858 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 359 transitions. [2020-10-14 08:46:08,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:46:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 359 transitions. [2020-10-14 08:46:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-14 08:46:08,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:08,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:08,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 08:46:08,864 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:08,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:08,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1959172322, now seen corresponding path program 1 times [2020-10-14 08:46:08,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:08,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960677109] [2020-10-14 08:46:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:08,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:13,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:13,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 08:46:13,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 08:46:13,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4456 [2020-10-14 08:46:13,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:13,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-14 08:46:13,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 08:46:13,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:13,533 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:13,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:13,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:13,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:13,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:13,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:13,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:46:13,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:13,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:13,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:13,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:13,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:13,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:13,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960677109] [2020-10-14 08:46:13,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:13,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:46:13,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745851756] [2020-10-14 08:46:13,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:46:13,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:13,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:46:13,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:46:13,571 INFO L87 Difference]: Start difference. First operand 240 states and 359 transitions. Second operand 4 states. [2020-10-14 08:46:13,738 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:46:14,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:14,133 INFO L93 Difference]: Finished difference Result 612 states and 949 transitions. [2020-10-14 08:46:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:14,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-14 08:46:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:14,142 INFO L225 Difference]: With dead ends: 612 [2020-10-14 08:46:14,142 INFO L226 Difference]: Without dead ends: 410 [2020-10-14 08:46:14,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:14,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-14 08:46:14,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 408. [2020-10-14 08:46:14,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 408 states. [2020-10-14 08:46:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 623 transitions. [2020-10-14 08:46:14,210 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 623 transitions. Word has length 65 [2020-10-14 08:46:14,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:14,211 INFO L479 AbstractCegarLoop]: Abstraction has 408 states and 623 transitions. [2020-10-14 08:46:14,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:46:14,211 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 623 transitions. [2020-10-14 08:46:14,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 08:46:14,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:14,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:14,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 08:46:14,213 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:14,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:14,214 INFO L82 PathProgramCache]: Analyzing trace with hash 108954062, now seen corresponding path program 1 times [2020-10-14 08:46:14,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:14,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708616067] [2020-10-14 08:46:14,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:14,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:14,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:15,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:19,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:19,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 08:46:19,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 08:46:19,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 08:46:19,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:19,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:19,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-14 08:46:19,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:46:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:19,458 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:19,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:19,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:19,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:19,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:19,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:19,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:19,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:46:19,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:19,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:19,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:19,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:19,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:19,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708616067] [2020-10-14 08:46:19,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:19,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:46:19,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543225624] [2020-10-14 08:46:19,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:46:19,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:19,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:46:19,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:46:19,494 INFO L87 Difference]: Start difference. First operand 408 states and 623 transitions. Second operand 4 states. [2020-10-14 08:46:19,677 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:46:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:20,076 INFO L93 Difference]: Finished difference Result 1084 states and 1689 transitions. [2020-10-14 08:46:20,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:20,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-14 08:46:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:20,082 INFO L225 Difference]: With dead ends: 1084 [2020-10-14 08:46:20,082 INFO L226 Difference]: Without dead ends: 714 [2020-10-14 08:46:20,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:20,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-10-14 08:46:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 712. [2020-10-14 08:46:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2020-10-14 08:46:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1095 transitions. [2020-10-14 08:46:20,118 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1095 transitions. Word has length 66 [2020-10-14 08:46:20,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:20,119 INFO L479 AbstractCegarLoop]: Abstraction has 712 states and 1095 transitions. [2020-10-14 08:46:20,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:46:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1095 transitions. [2020-10-14 08:46:20,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 08:46:20,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:20,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:20,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 08:46:20,121 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:20,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:20,122 INFO L82 PathProgramCache]: Analyzing trace with hash -386314098, now seen corresponding path program 1 times [2020-10-14 08:46:20,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:20,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614286658] [2020-10-14 08:46:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:20,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:20,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:20,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:20,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:21,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:24,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:25,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:25,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 08:46:25,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:46:25,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 08:46:25,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:25,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-14 08:46:25,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 08:46:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:25,313 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:25,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:25,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:25,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:25,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 08:46:25,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:25,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:25,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:25,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:25,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614286658] [2020-10-14 08:46:25,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:25,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:46:25,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215027725] [2020-10-14 08:46:25,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:46:25,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:25,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:46:25,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:46:25,343 INFO L87 Difference]: Start difference. First operand 712 states and 1095 transitions. Second operand 4 states. [2020-10-14 08:46:25,478 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 08:46:25,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:25,971 INFO L93 Difference]: Finished difference Result 1932 states and 3001 transitions. [2020-10-14 08:46:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:25,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-14 08:46:25,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:25,984 INFO L225 Difference]: With dead ends: 1932 [2020-10-14 08:46:25,985 INFO L226 Difference]: Without dead ends: 1258 [2020-10-14 08:46:25,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-14 08:46:26,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1256. [2020-10-14 08:46:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1256 states. [2020-10-14 08:46:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1927 transitions. [2020-10-14 08:46:26,083 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1927 transitions. Word has length 67 [2020-10-14 08:46:26,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:26,086 INFO L479 AbstractCegarLoop]: Abstraction has 1256 states and 1927 transitions. [2020-10-14 08:46:26,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:46:26,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1927 transitions. [2020-10-14 08:46:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 08:46:26,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:26,095 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:26,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 08:46:26,095 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:26,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:26,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1291716753, now seen corresponding path program 1 times [2020-10-14 08:46:26,096 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:26,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770066222] [2020-10-14 08:46:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:26,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:26,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:27,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:27,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:31,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:31,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 08:46:31,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-14 08:46:31,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:46:31,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:31,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:46:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:31,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 08:46:31,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:31,327 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:31,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:31,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:31,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 08:46:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:31,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:31,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:31,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770066222] [2020-10-14 08:46:31,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:31,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:31,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373255975] [2020-10-14 08:46:31,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:46:31,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:31,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:46:31,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:31,398 INFO L87 Difference]: Start difference. First operand 1256 states and 1927 transitions. Second operand 6 states. [2020-10-14 08:46:31,628 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 08:46:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:32,366 INFO L93 Difference]: Finished difference Result 3676 states and 5673 transitions. [2020-10-14 08:46:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:46:32,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 08:46:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:32,390 INFO L225 Difference]: With dead ends: 3676 [2020-10-14 08:46:32,390 INFO L226 Difference]: Without dead ends: 2458 [2020-10-14 08:46:32,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:46:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2020-10-14 08:46:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 2456. [2020-10-14 08:46:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2020-10-14 08:46:32,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3767 transitions. [2020-10-14 08:46:32,604 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3767 transitions. Word has length 68 [2020-10-14 08:46:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:32,606 INFO L479 AbstractCegarLoop]: Abstraction has 2456 states and 3767 transitions. [2020-10-14 08:46:32,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:46:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3767 transitions. [2020-10-14 08:46:32,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 08:46:32,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:32,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:32,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 08:46:32,608 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash -17848748, now seen corresponding path program 1 times [2020-10-14 08:46:32,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:32,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104260633] [2020-10-14 08:46:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:32,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:32,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:32,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:32,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:33,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:37,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:37,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 08:46:37,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 08:46:37,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-14 08:46:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:37,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:46:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 08:46:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:37,814 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:37,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:37,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:37,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:37,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:37,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 08:46:37,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:37,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:37,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:37,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:37,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:37,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:46:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:37,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104260633] [2020-10-14 08:46:37,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:37,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:37,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065303193] [2020-10-14 08:46:37,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:46:37,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:37,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:46:37,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:37,872 INFO L87 Difference]: Start difference. First operand 2456 states and 3767 transitions. Second operand 6 states. [2020-10-14 08:46:38,057 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 08:46:38,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:38,534 INFO L93 Difference]: Finished difference Result 4874 states and 7496 transitions. [2020-10-14 08:46:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:46:38,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 08:46:38,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:38,547 INFO L225 Difference]: With dead ends: 4874 [2020-10-14 08:46:38,547 INFO L226 Difference]: Without dead ends: 2456 [2020-10-14 08:46:38,553 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:46:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2020-10-14 08:46:38,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2456. [2020-10-14 08:46:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2456 states. [2020-10-14 08:46:38,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 3735 transitions. [2020-10-14 08:46:38,718 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 3735 transitions. Word has length 68 [2020-10-14 08:46:38,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:38,719 INFO L479 AbstractCegarLoop]: Abstraction has 2456 states and 3735 transitions. [2020-10-14 08:46:38,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:46:38,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 3735 transitions. [2020-10-14 08:46:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 08:46:38,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:38,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:38,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 08:46:38,726 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:38,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:38,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1859879281, now seen corresponding path program 1 times [2020-10-14 08:46:38,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:38,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199047628] [2020-10-14 08:46:38,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:38,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:40,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:40,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 08:46:40,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 08:46:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1604 [2020-10-14 08:46:40,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:40,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:40,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:46:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 08:46:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:40,538 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:40,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:40,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:40,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:40,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:40,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:40,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 08:46:40,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:40,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:40,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:40,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:40,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199047628] [2020-10-14 08:46:40,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:40,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:40,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254619749] [2020-10-14 08:46:40,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:46:40,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:40,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:46:40,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:40,579 INFO L87 Difference]: Start difference. First operand 2456 states and 3735 transitions. Second operand 6 states. [2020-10-14 08:46:40,754 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-14 08:46:41,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:41,385 INFO L93 Difference]: Finished difference Result 7260 states and 11065 transitions. [2020-10-14 08:46:41,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:46:41,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 08:46:41,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:41,410 INFO L225 Difference]: With dead ends: 7260 [2020-10-14 08:46:41,410 INFO L226 Difference]: Without dead ends: 4842 [2020-10-14 08:46:41,417 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:46:41,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2020-10-14 08:46:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4840. [2020-10-14 08:46:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4840 states. [2020-10-14 08:46:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4840 states to 4840 states and 7335 transitions. [2020-10-14 08:46:41,736 INFO L78 Accepts]: Start accepts. Automaton has 4840 states and 7335 transitions. Word has length 68 [2020-10-14 08:46:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:41,737 INFO L479 AbstractCegarLoop]: Abstraction has 4840 states and 7335 transitions. [2020-10-14 08:46:41,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:46:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 4840 states and 7335 transitions. [2020-10-14 08:46:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 08:46:41,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:41,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:41,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 08:46:41,739 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:41,739 INFO L82 PathProgramCache]: Analyzing trace with hash 988058420, now seen corresponding path program 1 times [2020-10-14 08:46:41,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:41,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888812119] [2020-10-14 08:46:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:41,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:42,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 08:46:42,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 08:46:42,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-14 08:46:42,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:42,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:46:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:46:42,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 08:46:42,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:42,599 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:42,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:42,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:42,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:42,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:42,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 08:46:42,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:42,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:42,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:46:42,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:42,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888812119] [2020-10-14 08:46:42,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:42,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:46:42,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268476867] [2020-10-14 08:46:42,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:46:42,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:42,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:46:42,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:46:42,639 INFO L87 Difference]: Start difference. First operand 4840 states and 7335 transitions. Second operand 6 states. [2020-10-14 08:46:42,812 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 08:46:43,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:43,711 INFO L93 Difference]: Finished difference Result 14380 states and 21801 transitions. [2020-10-14 08:46:43,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:46:43,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-14 08:46:43,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:43,759 INFO L225 Difference]: With dead ends: 14380 [2020-10-14 08:46:43,759 INFO L226 Difference]: Without dead ends: 9578 [2020-10-14 08:46:43,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:46:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2020-10-14 08:46:44,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 9576. [2020-10-14 08:46:44,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9576 states. [2020-10-14 08:46:44,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9576 states to 9576 states and 14439 transitions. [2020-10-14 08:46:44,419 INFO L78 Accepts]: Start accepts. Automaton has 9576 states and 14439 transitions. Word has length 68 [2020-10-14 08:46:44,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:44,419 INFO L479 AbstractCegarLoop]: Abstraction has 9576 states and 14439 transitions. [2020-10-14 08:46:44,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:46:44,420 INFO L276 IsEmpty]: Start isEmpty. Operand 9576 states and 14439 transitions. [2020-10-14 08:46:44,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-14 08:46:44,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:44,421 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:44,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 08:46:44,422 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:44,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:44,422 INFO L82 PathProgramCache]: Analyzing trace with hash -476013137, now seen corresponding path program 1 times [2020-10-14 08:46:44,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:44,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018545510] [2020-10-14 08:46:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 08:46:44,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:44,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-14 08:46:44,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:44,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:46:44,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:46:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 08:46:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:44,816 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:44,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:44,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:44,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:44,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:44,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:44,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 08:46:44,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:44,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:44,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:44,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:44,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:44,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:44,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018545510] [2020-10-14 08:46:44,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:44,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:46:44,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495861877] [2020-10-14 08:46:44,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:46:44,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:44,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:46:44,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:46:44,847 INFO L87 Difference]: Start difference. First operand 9576 states and 14439 transitions. Second operand 8 states. [2020-10-14 08:46:45,033 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 08:46:49,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:49,823 INFO L93 Difference]: Finished difference Result 104956 states and 158449 transitions. [2020-10-14 08:46:49,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:46:49,825 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 68 [2020-10-14 08:46:49,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:50,129 INFO L225 Difference]: With dead ends: 104956 [2020-10-14 08:46:50,130 INFO L226 Difference]: Without dead ends: 95418 [2020-10-14 08:46:50,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:46:50,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95418 states. [2020-10-14 08:46:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95418 to 19112. [2020-10-14 08:46:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19112 states. [2020-10-14 08:46:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19112 states to 19112 states and 28327 transitions. [2020-10-14 08:46:52,436 INFO L78 Accepts]: Start accepts. Automaton has 19112 states and 28327 transitions. Word has length 68 [2020-10-14 08:46:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:52,436 INFO L479 AbstractCegarLoop]: Abstraction has 19112 states and 28327 transitions. [2020-10-14 08:46:52,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:46:52,436 INFO L276 IsEmpty]: Start isEmpty. Operand 19112 states and 28327 transitions. [2020-10-14 08:46:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 08:46:52,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:52,437 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:52,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 08:46:52,438 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:52,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1219684426, now seen corresponding path program 1 times [2020-10-14 08:46:52,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:52,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509778869] [2020-10-14 08:46:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:52,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:52,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:52,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:52,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:52,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 08:46:52,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 08:46:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-14 08:46:52,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:52,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:46:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 08:46:52,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 08:46:52,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:52,769 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:52,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:52,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:52,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:52,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:52,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:46:52,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:52,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:52,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509778869] [2020-10-14 08:46:52,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:52,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 08:46:52,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146222176] [2020-10-14 08:46:52,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 08:46:52,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:52,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 08:46:52,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 08:46:52,792 INFO L87 Difference]: Start difference. First operand 19112 states and 28327 transitions. Second operand 4 states. [2020-10-14 08:46:52,938 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 08:46:54,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:46:54,861 INFO L93 Difference]: Finished difference Result 47342 states and 70123 transitions. [2020-10-14 08:46:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 08:46:54,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-14 08:46:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:46:54,929 INFO L225 Difference]: With dead ends: 47342 [2020-10-14 08:46:54,930 INFO L226 Difference]: Without dead ends: 28268 [2020-10-14 08:46:54,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:46:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28268 states. [2020-10-14 08:46:57,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28268 to 28266. [2020-10-14 08:46:57,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28266 states. [2020-10-14 08:46:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28266 states to 28266 states and 41449 transitions. [2020-10-14 08:46:57,148 INFO L78 Accepts]: Start accepts. Automaton has 28266 states and 41449 transitions. Word has length 70 [2020-10-14 08:46:57,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:46:57,148 INFO L479 AbstractCegarLoop]: Abstraction has 28266 states and 41449 transitions. [2020-10-14 08:46:57,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 08:46:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 28266 states and 41449 transitions. [2020-10-14 08:46:57,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-14 08:46:57,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:46:57,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:46:57,149 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 08:46:57,150 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:46:57,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:46:57,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1239733769, now seen corresponding path program 1 times [2020-10-14 08:46:57,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:46:57,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917009686] [2020-10-14 08:46:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:46:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:57,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:57,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 08:46:57,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:57,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 08:46:57,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:57,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 08:46:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:46:57,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 08:46:57,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:57,623 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2020-10-14 08:46:57,787 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:46:57,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:46:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:46:57,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:46:57,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:46:57,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:46:57,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:46:57,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 08:46:57,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:46:57,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:46:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:46:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:46:57,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:46:57,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:46:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:46:57,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917009686] [2020-10-14 08:46:57,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:46:57,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 08:46:57,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643267513] [2020-10-14 08:46:57,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 08:46:57,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:46:57,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 08:46:57,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 08:46:57,826 INFO L87 Difference]: Start difference. First operand 28266 states and 41449 transitions. Second operand 8 states. [2020-10-14 08:46:58,043 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-14 08:47:07,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:07,340 INFO L93 Difference]: Finished difference Result 160254 states and 235379 transitions. [2020-10-14 08:47:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 08:47:07,341 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-10-14 08:47:07,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:07,606 INFO L225 Difference]: With dead ends: 160254 [2020-10-14 08:47:07,606 INFO L226 Difference]: Without dead ends: 132028 [2020-10-14 08:47:07,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-14 08:47:07,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132028 states. [2020-10-14 08:47:10,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132028 to 28266. [2020-10-14 08:47:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28266 states. [2020-10-14 08:47:10,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28266 states to 28266 states and 41065 transitions. [2020-10-14 08:47:10,558 INFO L78 Accepts]: Start accepts. Automaton has 28266 states and 41065 transitions. Word has length 70 [2020-10-14 08:47:10,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:10,558 INFO L479 AbstractCegarLoop]: Abstraction has 28266 states and 41065 transitions. [2020-10-14 08:47:10,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 08:47:10,559 INFO L276 IsEmpty]: Start isEmpty. Operand 28266 states and 41065 transitions. [2020-10-14 08:47:10,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-14 08:47:10,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:10,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:10,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 08:47:10,560 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:10,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:10,560 INFO L82 PathProgramCache]: Analyzing trace with hash -224868174, now seen corresponding path program 1 times [2020-10-14 08:47:10,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:10,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036598132] [2020-10-14 08:47:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:10,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:10,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:10,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 08:47:10,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:10,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 08:47:10,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:10,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 08:47:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 08:47:10,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 08:47:10,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:10,869 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:47:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:10,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:10,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:10,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:47:10,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:10,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:10,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:10,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:10,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036598132] [2020-10-14 08:47:10,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 08:47:10,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 08:47:10,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170705424] [2020-10-14 08:47:10,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 08:47:10,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:10,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 08:47:10,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 08:47:10,889 INFO L87 Difference]: Start difference. First operand 28266 states and 41065 transitions. Second operand 5 states. [2020-10-14 08:47:15,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:15,583 INFO L93 Difference]: Finished difference Result 50960 states and 73644 transitions. [2020-10-14 08:47:15,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 08:47:15,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-10-14 08:47:15,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:15,682 INFO L225 Difference]: With dead ends: 50960 [2020-10-14 08:47:15,682 INFO L226 Difference]: Without dead ends: 50958 [2020-10-14 08:47:15,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:15,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50958 states. [2020-10-14 08:47:18,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50958 to 29290. [2020-10-14 08:47:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29290 states. [2020-10-14 08:47:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29290 states to 29290 states and 41961 transitions. [2020-10-14 08:47:18,409 INFO L78 Accepts]: Start accepts. Automaton has 29290 states and 41961 transitions. Word has length 71 [2020-10-14 08:47:18,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:18,410 INFO L479 AbstractCegarLoop]: Abstraction has 29290 states and 41961 transitions. [2020-10-14 08:47:18,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 08:47:18,410 INFO L276 IsEmpty]: Start isEmpty. Operand 29290 states and 41961 transitions. [2020-10-14 08:47:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:47:18,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:18,416 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:18,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 08:47:18,417 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:18,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1622290575, now seen corresponding path program 1 times [2020-10-14 08:47:18,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:18,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276831565] [2020-10-14 08:47:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:18,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:18,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:19,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:21,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:22,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:22,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:23,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:23,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:47:23,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:47:23,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-14 08:47:23,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:23,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:47:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 08:47:23,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:47:23,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:23,623 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:47:23,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:23,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:23,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:23,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:23,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:47:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:23,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:47:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:23,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276831565] [2020-10-14 08:47:23,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:47:23,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:47:23,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568792005] [2020-10-14 08:47:23,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:47:23,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:23,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:47:23,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:23,661 INFO L87 Difference]: Start difference. First operand 29290 states and 41961 transitions. Second operand 6 states. [2020-10-14 08:47:23,865 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 08:47:28,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:28,514 INFO L93 Difference]: Finished difference Result 81392 states and 117362 transitions. [2020-10-14 08:47:28,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:47:28,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:47:28,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:28,581 INFO L225 Difference]: With dead ends: 81392 [2020-10-14 08:47:28,581 INFO L226 Difference]: Without dead ends: 52142 [2020-10-14 08:47:28,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:28,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52142 states. [2020-10-14 08:47:33,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52142 to 52106. [2020-10-14 08:47:33,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52106 states. [2020-10-14 08:47:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52106 states to 52106 states and 74761 transitions. [2020-10-14 08:47:34,003 INFO L78 Accepts]: Start accepts. Automaton has 52106 states and 74761 transitions. Word has length 97 [2020-10-14 08:47:34,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:34,004 INFO L479 AbstractCegarLoop]: Abstraction has 52106 states and 74761 transitions. [2020-10-14 08:47:34,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:47:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 52106 states and 74761 transitions. [2020-10-14 08:47:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:47:34,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:34,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:34,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 08:47:34,012 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:34,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:34,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1920275063, now seen corresponding path program 1 times [2020-10-14 08:47:34,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:34,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221553676] [2020-10-14 08:47:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:34,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:35,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:37,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:37,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:38,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:39,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:39,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:47:39,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-14 08:47:39,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:47:39,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:39,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:39,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:47:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-14 08:47:39,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 08:47:39,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 08:47:39,193 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:47:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:47:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:39,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:47:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:47:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:47:39,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:47:39,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:47:39,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:47:39,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:47:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:47:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:47:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:47:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:47:39,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221553676] [2020-10-14 08:47:39,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:47:39,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:47:39,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737679120] [2020-10-14 08:47:39,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:47:39,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:47:39,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:47:39,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:47:39,218 INFO L87 Difference]: Start difference. First operand 52106 states and 74761 transitions. Second operand 6 states. [2020-10-14 08:47:39,376 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 08:47:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:47:46,442 INFO L93 Difference]: Finished difference Result 132752 states and 190674 transitions. [2020-10-14 08:47:46,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:47:46,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:47:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:47:46,547 INFO L225 Difference]: With dead ends: 132752 [2020-10-14 08:47:46,547 INFO L226 Difference]: Without dead ends: 80686 [2020-10-14 08:47:46,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:47:46,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80686 states. [2020-10-14 08:47:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80686 to 76714. [2020-10-14 08:47:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76714 states. [2020-10-14 08:47:55,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76714 states to 76714 states and 110505 transitions. [2020-10-14 08:47:55,187 INFO L78 Accepts]: Start accepts. Automaton has 76714 states and 110505 transitions. Word has length 97 [2020-10-14 08:47:55,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:47:55,188 INFO L479 AbstractCegarLoop]: Abstraction has 76714 states and 110505 transitions. [2020-10-14 08:47:55,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:47:55,188 INFO L276 IsEmpty]: Start isEmpty. Operand 76714 states and 110505 transitions. [2020-10-14 08:47:55,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:47:55,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:47:55,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:47:55,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 08:47:55,197 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:47:55,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:47:55,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1944020285, now seen corresponding path program 1 times [2020-10-14 08:47:55,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:47:55,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832687134] [2020-10-14 08:47:55,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:47:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:47:55,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:55,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:55,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:55,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:56,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:56,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:56,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:56,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:57,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:57,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:47:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:00,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:00,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:48:00,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:48:00,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 08:48:00,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:00,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:48:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-14 08:48:00,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 08:48:00,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:00,381 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:48:00,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:00,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:00,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:00,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:00,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:00,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:48:00,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:00,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:48:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:00,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:48:00,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:00,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832687134] [2020-10-14 08:48:00,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:48:00,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:48:00,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229617699] [2020-10-14 08:48:00,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:48:00,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:00,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:48:00,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:48:00,407 INFO L87 Difference]: Start difference. First operand 76714 states and 110505 transitions. Second operand 6 states. [2020-10-14 08:48:00,571 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 08:48:09,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:09,215 INFO L93 Difference]: Finished difference Result 173600 states and 249666 transitions. [2020-10-14 08:48:09,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:48:09,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:48:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:09,350 INFO L225 Difference]: With dead ends: 173600 [2020-10-14 08:48:09,350 INFO L226 Difference]: Without dead ends: 96926 [2020-10-14 08:48:09,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:48:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96926 states. [2020-10-14 08:48:19,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96926 to 91274. [2020-10-14 08:48:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91274 states. [2020-10-14 08:48:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91274 states to 91274 states and 131593 transitions. [2020-10-14 08:48:19,969 INFO L78 Accepts]: Start accepts. Automaton has 91274 states and 131593 transitions. Word has length 97 [2020-10-14 08:48:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:19,969 INFO L479 AbstractCegarLoop]: Abstraction has 91274 states and 131593 transitions. [2020-10-14 08:48:19,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:48:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand 91274 states and 131593 transitions. [2020-10-14 08:48:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:48:19,977 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:19,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:19,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 08:48:19,978 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:19,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:19,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1978421117, now seen corresponding path program 1 times [2020-10-14 08:48:19,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:19,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765201945] [2020-10-14 08:48:19,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:20,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:20,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:21,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:21,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:25,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:25,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:48:25,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 08:48:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:48:25,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:25,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:25,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:48:25,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 08:48:25,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 08:48:25,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:25,152 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:48:25,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:25,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:25,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:25,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:25,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:25,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 08:48:25,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:25,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:48:25,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:25,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:48:25,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:25,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765201945] [2020-10-14 08:48:25,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:48:25,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:48:25,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398042905] [2020-10-14 08:48:25,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:48:25,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:25,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:48:25,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:48:25,175 INFO L87 Difference]: Start difference. First operand 91274 states and 131593 transitions. Second operand 6 states. [2020-10-14 08:48:25,333 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 08:48:35,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:48:35,482 INFO L93 Difference]: Finished difference Result 205552 states and 295634 transitions. [2020-10-14 08:48:35,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:48:35,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:48:35,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:48:35,619 INFO L225 Difference]: With dead ends: 205552 [2020-10-14 08:48:35,619 INFO L226 Difference]: Without dead ends: 114318 [2020-10-14 08:48:35,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:48:35,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114318 states. [2020-10-14 08:48:48,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114318 to 105834. [2020-10-14 08:48:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105834 states. [2020-10-14 08:48:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105834 states to 105834 states and 152681 transitions. [2020-10-14 08:48:48,201 INFO L78 Accepts]: Start accepts. Automaton has 105834 states and 152681 transitions. Word has length 97 [2020-10-14 08:48:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:48:48,201 INFO L479 AbstractCegarLoop]: Abstraction has 105834 states and 152681 transitions. [2020-10-14 08:48:48,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:48:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 105834 states and 152681 transitions. [2020-10-14 08:48:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-14 08:48:48,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:48:48,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:48:48,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 08:48:48,208 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:48:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:48:48,209 INFO L82 PathProgramCache]: Analyzing trace with hash 66063287, now seen corresponding path program 1 times [2020-10-14 08:48:48,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:48:48,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615541445] [2020-10-14 08:48:48,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:48:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:48,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:48,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:48,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:51,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:52,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:53,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:53,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 08:48:53,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 08:48:53,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 08:48:53,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:53,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 08:48:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 08:48:53,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 08:48:53,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:53,395 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:48:53,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:48:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:48:53,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:48:53,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:48:53,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:48:53,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:48:53,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 08:48:53,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:48:53,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:48:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 08:48:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:48:53,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 08:48:53,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:48:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:48:53,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615541445] [2020-10-14 08:48:53,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:48:53,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 08:48:53,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478256606] [2020-10-14 08:48:53,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 08:48:53,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:48:53,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 08:48:53,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 08:48:53,427 INFO L87 Difference]: Start difference. First operand 105834 states and 152681 transitions. Second operand 6 states. [2020-10-14 08:48:53,584 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 137 [2020-10-14 08:49:05,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 08:49:05,341 INFO L93 Difference]: Finished difference Result 238608 states and 343186 transitions. [2020-10-14 08:49:05,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 08:49:05,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-14 08:49:05,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 08:49:05,502 INFO L225 Difference]: With dead ends: 238608 [2020-10-14 08:49:05,502 INFO L226 Difference]: Without dead ends: 132814 [2020-10-14 08:49:05,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-14 08:49:05,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132814 states. [2020-10-14 08:49:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132814 to 120394. [2020-10-14 08:49:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120394 states. [2020-10-14 08:49:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120394 states to 120394 states and 173769 transitions. [2020-10-14 08:49:19,888 INFO L78 Accepts]: Start accepts. Automaton has 120394 states and 173769 transitions. Word has length 97 [2020-10-14 08:49:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 08:49:19,888 INFO L479 AbstractCegarLoop]: Abstraction has 120394 states and 173769 transitions. [2020-10-14 08:49:19,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 08:49:19,888 INFO L276 IsEmpty]: Start isEmpty. Operand 120394 states and 173769 transitions. [2020-10-14 08:49:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-14 08:49:19,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 08:49:19,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 08:49:19,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 08:49:19,896 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 08:49:19,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 08:49:19,896 INFO L82 PathProgramCache]: Analyzing trace with hash 380722341, now seen corresponding path program 1 times [2020-10-14 08:49:19,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 08:49:19,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386678911] [2020-10-14 08:49:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 08:49:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:19,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:20,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:21,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:21,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:21,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:22,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:24,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:24,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-14 08:49:24,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-14 08:49:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 08:49:24,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:24,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 08:49:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 08:49:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 08:49:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:49:25,200 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 08:49:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 08:49:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 08:49:25,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 08:49:25,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 08:49:25,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 08:49:25,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 08:49:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 08:49:25,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 08:49:25,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 08:49:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 08:49:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 08:49:25,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 08:49:25,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 08:49:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 08:49:25,244 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386678911] [2020-10-14 08:49:25,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 08:49:25,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 08:49:25,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679436043] [2020-10-14 08:49:25,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 08:49:25,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 08:49:25,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 08:49:25,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 08:49:25,246 INFO L87 Difference]: Start difference. First operand 120394 states and 173769 transitions. Second operand 11 states. [2020-10-14 08:49:25,458 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 143